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missfiring cylinder what doe's 62 mean?

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Old Dec 6, 2021 | 6:58 PM
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Default missfiring cylinder what doe's 62 mean?

missfiring cylinder what doe's 62 mean?

attach 2 images before spark plug & wire replacement and after still the 62, this can't be good.

04 chevy express w/ 320K miles 5.3 LM7 engine fuel pressure is normal on all injectors.considering on purchasing this van if it's something like a coil causeing this skip. or is 62 a burnt out cylinder?
thanks for advice


Last edited by the Brain; Dec 6, 2021 at 7:00 PM.
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Old Dec 6, 2021 | 9:51 PM
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62 misfires.

make sure you clear the codes after you do some work.
You should read off all your other basic engine parameters.
Vacuum leaks are common. Check for them.
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Old Dec 7, 2021 | 9:03 AM
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the seller got these results from a mechanic, I assume the screen is a tech2 tester. I don't have a tester. I'm willing to make a smallish investment in a tester.

1.so is 62 alot of misfires where it could be good chance of internal engine damage?
2.or is 62 not considered alot where it most likely is something else like, coil/fuel injector ect. or vacuum leak like you say.

3.cylinder 4 had 52 misfires cylinder 1 had 32 where a spark plug & wire fixed, so it seams 62 misfires isn'nt internal?

4.wouldn't a vacuum leak effect all cylinders?

I wonder if the mechanic swapped coils or injectors from a fine cylinder.

the fuel pressure is fine on injectors.

notice one of the four spark plugs it appears to not be getting fuel, is it usele for a mechanic to hand write down the fuel pressure of each injector.
this multipe missfires is what happened to my last express (it had 195K miles) I didn't even know it was misfireing it drove smooth and ideled fine I drove it for like 10K mile (then I had to try to fix it's skip after removing the intake I was hopeing it's gaskets where creating a vacum leak I couldn't get her to crank after that, I believe I had the distriber out of phase even though I marked it prior to removing.


the seller claims it idels rough but drives smooth.thanks for advice

I'm still having a very hard time finding a replacment express conversion and the last 2 years of coof has made the situation even harder.so I'm resorting to scrapping the bottom of the barrel so to speak.



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